linux-kernel - Re: [PATCH] driver: block: nbd: Replace magic number 9 with SECTOR

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Message-ID: <20190702225521.GA16741@continental>
Date:   Tue, 2 Jul 2019 19:55:21 -0300
From:   Marcos Paulo de Souza <marcos.souza.org@...il.com>
To:     linux-kernel@...r.kernel.org
Cc:     Marcos Paulo de Souza <mpdesouza@...e.com>,
        Josef Bacik <josef@...icpanda.com>,
        Jens Axboe <axboe@...nel.dk>,
        "open list:NETWORK BLOCK DEVICE (NBD)" <linux-block@...r.kernel.org>,
        "open list:NETWORK BLOCK DEVICE (NBD)" <nbd@...er.debian.org>,
        marcos.souza.org@...il.com
Subject: Re: [PATCH] driver: block: nbd: Replace magic number 9 with
 SECTOR_SHIFT

ping?

On Mon, Jun 24, 2019 at 01:09:33PM -0300, Marcos Paulo de Souza wrote:
> set_capacity expects the disk size in sectors of 512 bytes, and changing
> the magic number 9 to SECTOR_SHIFT clarifies this intent.
> 
> Signed-off-by: Marcos Paulo de Souza <mpdesouza@...e.com>
> ---
>  drivers/block/nbd.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c
> index 3a9bca3aa093..fd3bc061c600 100644
> --- a/drivers/block/nbd.c
> +++ b/drivers/block/nbd.c
> @@ -288,7 +288,7 @@ static void nbd_size_update(struct nbd_device *nbd)
>  	}
>  	blk_queue_logical_block_size(nbd->disk->queue, config->blksize);
>  	blk_queue_physical_block_size(nbd->disk->queue, config->blksize);
> -	set_capacity(nbd->disk, config->bytesize >> 9);
> +	set_capacity(nbd->disk, config->bytesize >> SECTOR_SHIFT);
>  	if (bdev) {
>  		if (bdev->bd_disk) {
>  			bd_set_size(bdev, config->bytesize);
> -- 
> 2.21.0
>